Allow config to disable geoip (#2202)

For a offline or private cloud environment, geoip is not needed.
Implementing https://github.com/kubernetes/ingress-nginx/issues/2179

internal/ingress/controller/config/config.go

@@ -340,6 +340,10 @@ type Configuration struct {
 	// http://nginx.org/en/docs/http/ngx_http_gzip_module.html
 	UseGzip bool `json:"use-gzip,omitempty"`
 
+	// Enables or disables the use of the nginx geoip module that creates variables with values depending on the client IP
+	// http://nginx.org/en/docs/http/ngx_http_geoip_module.html
+	UseGeoIP bool `json:"use-geoip,omitempty"`
+
 	// Enables or disables the use of the NGINX Brotli Module for compression
 	// https://github.com/google/ngx_brotli
 	EnableBrotli bool `json:"enable-brotli,omitempty"`
@@ -542,6 +546,7 @@ func NewDefault() Configuration {
 		SSLSessionTimeout:          sslSessionTimeout,
 		EnableBrotli:               false,
 		UseGzip:                    true,
+		UseGeoIP:                   true,
 		WorkerProcesses:            strconv.Itoa(runtime.NumCPU()),
 		WorkerShutdownTimeout:      "10s",
 		LoadBalanceAlgorithm:       defaultLoadBalancerAlgorithm,